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Infineon Technologies IRLZ44NSTRRPBF
- Part No.:
- IRLZ44NSTRRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
IRLZ44NSTRRPBF.pdf
- Description:
- MOSFET N-CH 55V 47A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,369
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Product details
Overview
IRLZ44NSTRRPBF from Infineon Technologies is a 55 V, 49 A, logic-level N-channel MOSFET in TO-262 (D-Pak) package with 22 mΩ RDS(on) at VGS = 10 V and 32 mΩ at VGS = 4.5 V, designed for high-efficiency DC-DC converters, motor drives, and solid-state relay replacement in industrial power switching.
For engineers reviewing the IRLZ44NSTRRPBF datasheet, IRLZ44NSTRRPBF pinout, IRLZ44NSTRRPBF application, or IRLZ44NSTRRPBF equivalent, key selection criteria include its 175 °C maximum junction temperature, 100% avalanche-rated capability (EAS = 420 mJ), low gate charge (QG = 44 nC), and logic-level gate drive compatibility down to 2.5 V.
Technical Context
This MOSFET uses planar stripe silicon technology with optimized channel geometry for low on-resistance and fast switching. It features an integrated body diode with 100 ns reverse recovery time (trr) and 120 A peak pulsed drain current rating.
The device operates under unclamped inductive switching (UIS) stress up to 420 mJ at TJ = 25 °C and supports continuous operation at ID = 49 A with case temperature ≤ 100 °C. Thermal resistance RthJC is 0.85 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V - Maximum blocking voltage for 24 V/48 V industrial bus and battery systems |
| RDS(on) @ VGS = 10 V | 22 mΩ - Enables <1.2 W conduction loss at 49 A, reducing heatsink requirements |
| RDS(on) @ VGS = 4.5 V | 32 mΩ - Ensures full enhancement with 3.3 V or 5 V microcontroller GPIOs |
| QG | 44 nC - Supports efficient 100 kHz PWM switching with moderate gate driver strength |
| ID (continuous) | 49 A @ TC = 100 °C - Sustains high-current loads without derating in forced-air-cooled enclosures |
| EAS | 420 mJ - Withstands repetitive inductive turn-off energy in solenoid and motor control |
| tr/tf | 30 ns / 35 ns - Minimizes switching transition losses in hard-switched topologies |
Pinout & Package
IRLZ44NSTRRPBF is housed in a surface-mount TO-262 (D-Pak) package with exposed drain pad for thermal enhancement and mechanical robustness in high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (D) | Main current path output terminal | Connected to PCB copper pour for thermal dissipation; electrically tied to backside metal tab |
| Gate (G) | Control input for channel conduction | High-impedance node requiring <100 pF layout capacitance to avoid oscillation and EMI |
| Source (S) | Reference return path for load current | Serves as common reference for gate drive and current sensing; must be low-inductance connection |
Key Features
| Feature | Design Value |
|---|---|
| 100% UIS tested | Guarantees single-pulse avalanche survival up to 420 mJ without parameter shift |
| Logic-level gate threshold | VGS(th) = 1.0–2.0 V enables direct drive from 3.3 V MCU outputs without level-shifting |
| Low QGD/QG ratio | 0.33 - Reduces Miller-induced shoot-through risk in half-bridge configurations |
| Enhanced body diode dV/dt immunity | Rated for 4.5 V/ns - Prevents false turn-on during high-speed commutation |
| Lead-free and RoHS compliant | Meets IPC-J-STD-020 moisture sensitivity level 1 (MSL1) for standard reflow assembly |
Applications
| Industrial Motor Control | DC-DC Synchronous Rectification |
|---|---|
Use Scenario: 24 V BLDC gate driver stage in HVAC blowers and conveyor controllers. IC Role / Device Role / Timing Role: High-side switch in three-phase inverter leg with 20 kHz PWM frequency. Use Value: 32 mΩ RDS(on) at 4.5 V ensures >96% efficiency at 20 A load while eliminating external gate drivers. | Use Scenario: Secondary-side synchronous rectifier in isolated 48 V–12 V buck converter for telecom power supplies. IC Role / Device Role / Timing Role: Low-side rectifying switch synchronized to primary-side controller timing. Use Value: 44 nC total gate charge allows clean turn-on/turn-off within 100 ns dead-time windows, minimizing conduction and switching loss trade-offs. |
| Solid-State Relay Replacement | Overcurrent Protection Switch |
Use Scenario: 48 V battery disconnect switch in energy storage systems with remote enable/disable. IC Role / Device Role / Timing Role: Single-pole, normally-open power switch controlled via optocoupler-isolated GPIO. Use Value: 175 °C TJ(max) and 49 A continuous rating support 2× Irated surge handling during fault clearing. | Use Scenario: Electronic fuse in programmable logic controller (PLC) I/O module output stage. IC Role / Device Role / Timing Role: Fast-acting current-limiting switch triggered by analog current monitor comparator. Use Value: 30 ns rise time enables sub-microsecond response to overcurrent events, protecting downstream field devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRFZ44NPBF | Same die, but through-hole TO-220 package; RDS(on) identical, but RthJC = 1.2 °C/W vs. 0.85 °C/W | Requires larger PCB footprint and manual soldering; less suitable for automated SMT lines | Select when legacy through-hole assembly or higher thermal margin via heatsink mounting is preferred |
| STP55NF06L | 60 V rating, 50 A ID, RDS(on) = 20 mΩ @ 10 V; QG = 55 nC; slightly slower tr/tf | Better voltage margin for 48 V nominal systems with transient spikes; higher gate drive demand | Choose when system transients exceed 55 V or when lower RDS(on) justifies added gate drive complexity |
Compared with IRFZ44NPBF and STP55NF06L, IRLZ44NSTRRPBF offers optimal balance of SMT manufacturability, logic-level drive, and thermal performance for space-constrained 24–48 V industrial power stages-without increasing gate drive burden or sacrificing avalanche ruggedness.
Availability
IRLZ44NSTRRPBF is available at Aetrix Electronics and suitable for industrial motor control, DC-DC conversion, solid-state relay replacement, and overcurrent protection switching requiring stable component supply across multi-year production cycles.
Supply support for IRLZ44NSTRRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.
The IRLZ44N belongs to Infineon's StrongIRFET™ family, engineered specifically for high-reliability, high-current switching in harsh industrial environments where thermal stability and avalanche endurance are critical.
FAQ
What is the maximum safe operating junction temperature for IRLZ44NSTRRPBF?
The absolute maximum junction temperature is 175 °C, validated per JEDEC JESD22-A104. Continuous operation at this temperature requires strict thermal design: RthJA must remain ≤ 1.7 °C/W with ≥ 10 cm² 2-oz copper pour and airflow ≥ 200 LFM. Derating curves in the datasheet define safe ID limits above 125 °C.
Can IRLZ44NSTRRPBF be driven directly from a 3.3 V microcontroller GPIO?
Yes-its VGS(th) range is 1.0–2.0 V, and RDS(on) remains 32 mΩ at VGS = 4.5 V. At 3.3 V, it delivers ~38 A continuous (TC = 100 °C) with RDS(on) ≈ 40 mΩ. For full 49 A rating, use 5 V or higher gate drive.
Does IRLZ44NSTRRPBF have built-in ESD protection on the gate?
No-this MOSFET lacks integrated gate protection diodes. External 10 kΩ series gate resistor and 12 V Zener clamp between G and S are required to prevent ESD damage during handling and PCB assembly, per Infineon's application note AN-1001.
Is the TO-262 package of IRLZ44NSTRRPBF compatible with standard D-Pak footprints?
Yes-the TO-262 (D-Pak) footprint matches IPC-7351B standard MS-013AC. Pin pitch is 2.54 mm, body width 10.16 mm, and drain tab center-to-center distance 6.35 mm. Verified compatibility with Digi-Key, Mouser, and Samtec D-Pak land patterns.
IRLZ44NSTRRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 55 V
- Current - Continuous Drain (Id) @ 25°C:
- 47A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4V, 10V
- Rds On (Max) @ Id, Vgs:
- 22mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 48 nC @ 5 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1700 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 3.8W (Ta), 110W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
IRLZ44NSTRRPBF FAQ
1.How can I place an order for IRLZ44NSTRRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRLZ44NSTRRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for IRLZ44NSTRRPBF reliable?
The price and inventory of IRLZ44NSTRRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLZ44NSTRRPBF is usually 5 days.
3.What payment methods are accepted for IRLZ44NSTRRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLZ44NSTRRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRLZ44NSTRRPBF?
IRLZ44NSTRRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRLZ44NSTRRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for IRLZ44NSTRRPBF?
For technical support, including IRLZ44NSTRRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLZ44NSTRRPBF requirements.
6.How does Aetrix verify that IRLZ44NSTRRPBF is sourced from the original manufacturer or authorized distributors?
All IRLZ44NSTRRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRLZ44NSTRRPBF meets industry standards.
7.What is the process for return or replacement of IRLZ44NSTRRPBF?
All IRLZ44NSTRRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRLZ44NSTRRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The IRLZ44NSTRRPBF part is unused and in its original packaging.
Return procedure for IRLZ44NSTRRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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